Kenwood_TK-760H_TK-762H_serv.pdf

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1、( VHFFMTRANSCEIVER TK-760/762/H SERVICE MANUAL TK-760JH Cabinet(Upper) (AOl-2112-03) PanelassyFrontglass (A62-0449-13)(810-1230-04) TK-762/H KENWOOD 1996-5 PRINTEDINJAPAN B51-8327-00 (N) 1382 - Keytop(Rubber) (K29-5081-02) Frontglass (810-1252-04) -.;m:- Panel assy (A62-0450-13) Keytop(Rubber) (K29-

2、5081-02) TK-760/762/H CONTENTS GENERAL3 SYSTEM SET-UP:5 OPERATING FEATURES 1.TransceiverProgramming6 INSTALLATION 1.AccessoryConnectionCable (KCT-19 :Option)7 2.IgnitionSense Cable (KCT-18 :Option)9 3.PA/HAUnit(KAP-1 :Option)10 4.DTMFDecode:11 5.ExternalSpeaker12 6.FittingtheControlPanelUpsideDown12

3、 REALIGNMENT 1.Modes13 2.HowToEnterEachMode13 3. PanelTestMode(TK-760 Only)13 4.PanelTuningMode(TK-760 Only)15 BLOCKDIAGRAM17 LEVEL DIAGRAM:19 CIRCUIT DESCRIPTION 1.CircuitConfigurationbyFrequency20 2.ReceivingSystem20 3.TransmitterSystem22 4.FrequencySynthesizerUnit23 5.DisplaySection24 6.ControlSe

4、ction24 SEMICONDUCTOR DATA27 DESCRIPTIONOFCOMPONENTS31 PARTS LIST34 EXPLODED VIEW41 PACKING42 ADJUSTMENT43 TERMINAL FUNCTION49 PCBOARD VIEWSICIRCUIT DIAGRAMS VCO (X58-4360-XX)50 TX-RXUNIT:TX-RX (X57-4950-XX)(A/2):TK-760I(X57-5100-XX)(A/2) :TK-76251 TX-RXUNIT:CONTROL (X57-4950-XX)(B/2) :TK-760I(X57-5

5、100-XX)(B/2) :TK-76261 KAP-1(PA/HAUNIT)71 SPECIFICATIONSBACKCOVER 2 TK-760/762 GENERAL INTRODUCTION SCOPEOFTHISMANUAL This manual is intended for use by experienced technicians familiarwithsimilar types of commercial grade communications equipment. It containsallre- quired service information for th

6、e equipment andis currentasof the publication data. Changes which may occur after publication are coveredbyeither Service Bulletins or Manual Revisions. These are issuedasre- quired. ORDERING REPLACEMENT PARTS When ordering replacement parts or equipment in- formation, the full part identification n

7、umber shouldbe included. This applies toallparts: components, kits, or chassis. If the part numberisnot known, include the chassis or kit number of which itisa part, and a suffi- cient descriptionofthe required component for proper identification. PERSONNEL SAFETY The following precautions are recom

8、mended for personnelsafety: DONOT transmit if someoneiswithintwofeet (0.6 meter) of the antenna. DONOT transmit untilallRFconnectors are verified secure and any open connectors are properly termi- nated. SHUTOFFand DO NOT operate thisequipment near electrical blasting caps orinanexplosive at- mosphe

9、re. All equipment shouldbeproperly grounded before power-up for safe operation. This equipment should be serviced by a qualified technician only. FCCCOMPLIANCEANDTYPE NUMBERS Model andFrequencyTXDeviationSignaling destinationrange (MHzlpowerIW)(kHz)OTDOT2TONEDECDTMFENC TK-760K148-174255/2.50 000 TK-

10、760K2136-156255/2.50 000 TK-762K148-174255/2.5 0000 TK-762K2136-156255/2.5 0000 TK-760HK148-174455/2.50000 TK-760HK2136-156455/2.500 00 TK-762HK148-174455/2.500 00 TK-762HK2136-156455/2.500 00 PRE-INSTALLATION CONSIDERATIONS 1.UNPACKING Unpack the radio from its shipping container and check for acce

11、ssory items. If anyitemis missing, please contact KENWOOD immediately. 2.L1CI;NSING REQUIREMENTS Federal regulations require a station license for each radio installation (mobile or base)beobtainedbythe equipment owner. The licenseeisresponsible for en- suring transmitter power, frequency,anddeviati

12、on are within the limits permitted by the station license. Transmitter adjustments maybeperformed only by a licensed technician holdinganFCCfirst, second or general class commercial radiotelephone operatorsli- cense. Thereisnolicense required to install or operate the radio. 3.PRE-INSTALLATION CHECK

13、OUT 3-1. Introduction Eachradioisadjusted and tested before shipment. However, itisrecommended that receiver and trans- mitter operationbechecked for proper operation be- fore installation. 3-2. Testing The radio shouldbetested completewithallcabling andaccessoriesasthey will be connectedinthe final

14、 installation.Transmitterfrequency,deviation, and power output shouldbechecked,asshould receiver sensitivity,squelchoperation,and audiooutput. OTequipment operation shouldbeverified. 3 TK-760/762 GENERAL 4 4.PLANNING THEINSTAllATION 4-1. General Inspect the vehicle and determinehowand where the radi

15、o antenna and accessories willbemounted. Plancable runs for protection against pinching or crushing wiring, and radio installation to prevent over- heating. 4-2. Antenna The favored location foranantennaisinthe center of a large, flat conductive area, usually at the roof cen- ter. The trunk lidispre

16、ferred, bond the trunk lid and vehicle chassis using ground straps to ensure the lidis at chassis ground. 4-3. Radio The universal mount bracket allows the radio tobe mountedina variety of ways.8esure the mounting surfaceisadequate to support the radios weight. Al- lowsufficient space around the rad

17、io for air cooling. Position the radio close enough to the vehicle operator to permit easy access to the controls when driving. 4-4. DCPower and wiring 1.This radio maybeinstalledinnegative ground elec- trical systems only. Reverse polarity will cause the cable fuse to blow. Check the vehicle ground

18、 polar- ity before installation to prevent wasted timeand effort. 2.Connect the positive power lead directly to the ve- hicle battery positive terminal. Connecting the Posi- tive lead to any other positive voltage sourceinthe vehicleisnot recommended. CAUTION IfDCpoweristo be controlled by the vehic

19、le ignition switch, a switching relay should be usedtoswitch the positivepowerlead.Thevehicle ignition switch then controls DC to the relay coil. 3.Connect the ground lead directlytothebattery negative terminal. 4.The cable providedwiththe radioissufficient to handle the maximum radio current demand

20、. If the cable mustbeextended, be sure the additional wire issufficient for the current tobecarriedandlength ofthe added lead. 5.INSTALLATION PLANNING - CONTROL STATIONS 5-1. Antenna system Control station. The antenna system selection de- pendsonmany factorsandisbeyond the scope of this manual. You

21、r KENWOOD dealercanhelp you select anantenna system that will best serve your particular needs. 5-2. Radio location Select a convenient location for your control station radio whichisascloseaspractical to the antenna cable entry point. Secondly, use your systems power supply (which supplies the volt

22、age and current required for your system). Make sure sufficient aircanflowaround the radio and power supply to allow adequate cooling. SERVICE This radioisdesigned for easy servicing. Refer to the schematic diagrams, printed circuit board views, andalignment procedures containedinthis manual. Note W

23、hen you modify your radioasdescribedinsystem set-up, take the following precaution. The rating of pin 7 (58) of the accessory connector cable(KCT-19)on the rear of the radioisl3.6V(lA). Insert a 1A fuse if you use the58pin for external equipment. If you do not intend to use the 3.5-mm jack for the e

24、xternal speaker,fitthesupplied speaker-jack cap (809-0235-XX) to stop dustandsand gettingin. SYSTEMSET-UP TK-760/762 ( Merchandisereceived )Display:LCD Frequency range (MHz)RFpowerType 148-17425WK -.j32chmodelsI 136-15625WK2 TK-760/HI 148-17445WHK (License andfrequencyallocated byFCC) 136-15645WHK2

25、Display:LED Frequency range (MHz)RFpowerType 148-17425WK I2chmodelsI ( Choosethetypeoftransceiver 136-15625WK2 ./ I TK-762/H I 148-17445WHK 136-15645WHK2 ( Areyouusingthesignaling? YES I See page 11. ./ I DTMF decoder Installationthecontrolunit whenusedIC:LC73881M (SANYO). NO I (Dealer option) I Tra

26、nsceiverprogrammingISee page6. (Option) A personalcomputer(IBMPCorcompatible),programminginterface (KPG-4), andprogrammingsoftware(KPG-29DI are requiredforprogramming. (Thefrequencyandsignaling(option) data areprogrammedforthe transceiver.) ( Areyouusing thepublicaddress? YES JKAP-l See page 10. ./

27、I PA/HAunit Installation the TX-RXunit whenusedKAP-l. NO I (Option) See page 12. ( Are you usingtheexternal speaker? YES IKES-3 ./ I External speaker NO I (Option) See page7.See page9. KCT-19IKCT-18I (.h.bl7YES IIgnitionsense cableAreyou uSing t eIgnitionsensecae./Accessoryconnectorcable NO (Option)

28、(Option) ( Delivery 5 TK-760/762 OPERATINGFEATURES 1.Transceiver Programming 1-1. Introduction The TK-760/762 transceiverisprogrammed usingan IBMPCor compatible machine, a programming inter- face(KPG-4),and a programming disk (KPG-29D).Fig- ure 1 shows the setup foranIBMPC. 6 Programmingdisk (KPG-29

29、Dl 1-2. KPG-4 Description (OptionalPCprogramming interface cable) TheKPG-4isreeded to connect the TK-760/762 to the computer.Ithasa circuitinthe D-subconnector (25-pin) case that converts the RS-232C logic level to TTL level.TheKPG-4plugisconnected to external socket of the TK-760/762 and to the com

30、puterbya conversion cable (option)witha 9-pin female connec- tor and a 25-pin male connector. 1-3. ProgrammingSoftwareDescription KPG-29Disthe programming software for theTK- 760/762, suppliedona 3.5 or 5.25 floppy disk. This software runs under MS-DOS (version 3.3 or later)on anIBM-PC/XT,AT,orPS2,o

31、r on a compatible machine. Datacanbe input to or read from the TK-760/762,and editedonthescreen.Programmeddata can be printed. Fig. 1 Communicationport(RS-232Cl 1-4. Data ProgramMode Inthis mode, dataiswritten into the flash memory inthe transceiver. When the poweristurned on, data program modecanbe

32、entered immediately. When the KPG-4isconnected and commandscanbereceived, PROGRAMisdisplayed to indicate that data program modehasbeen entered. Tuningcanbedone usinganIBMPCand KPG-29D, inthe same wayasinpanel tuning mode.Youcan carry out panel tuning by selecting test mode on the KPG-29D menu screen

33、 and following the instructions on the screen.See the KPG-29D instruction manual for details. TK-760/762 OPERATINGFEATURES/INSTALLATION 1-5. CloneMode(Figure21 Programmed dataistransferred from one trans- ceiver to another by using a microphone cable. 1.Connect the master set to the slave setwithbut

34、 the master setisTK-760 only. 2.Turn the slave set on. 3.Hold down theCHTjkey, turn the master set on, and keep theCHTjkey down fortwomore sec- onds.-C- appears on the display to indicate that clone mode has been entered. INSTALLATION 1.Accessory Connection Cable (KCT-19 : Option) The KCT-19isanacce

35、ssory connection cable for connecting external equipment. The connector has15 pins and the necessary signal lines are selected for use. 1-1. InstallingtheKCT-19inthetransceiver 1.Remove the upper and lower halves of the trans- ceiver case, and lift theDCcord bushing (0)from the chassis. 2.Remove the

36、 pad(f)I. Fig. 2 4.Press the MON keyonthe master set. Themark appears and dataissent from the master settothe slave set. -PC- appearsonthe slave set toshow that itisreceiving data. 5.When cloningiscomplete, themarkonthe mas- ter set disappearsand-C- changes toEND.The slavesetisautomatically reset an

37、d enters user mode. If cloning fails, the master set shows ErrOr.Re- peat steps 4 and5. If you wishtoclone several sets, switch eachof them on and repeat 4 and5. Fig. 1 7 TK-760/762 INSTALLATION 3.Insert theKCT-19cable(e)into the chassis(0). Thewireharness band(0)mustbe inside the chassis. 4.Relocat

38、e theDCcord bushinginthe chassis (0). 5.ConnecttheKCT-19totheTX-RXunit(A/2)as showninFigure 2 (0). 6.Connect theKCT-19to the external accessory by in- serting the crimp terminal (9)into the square plug (0),both of whicharesuppliedwiththeKCT-19. Fig. 2 1-2. Terminal function No.(A)No.(B,C.D)NameFunct

39、ionKAP-1Instllated A-10-2HK/CHSMIC hook input/Channel select - A-20-5MEMIC GND- A-30-3IGNIgnition input - A-40-1DEODetect output- A-50-6MIMIC input - A-6B-2EGND - A-7B-3SBDCsupply(1A)- A-S0-7PHPHinput - A-90-401Data mod input - A-10B-1HORHorn Alert outputHR1 A-l1D-SSOSquelch output- A-12C-1SPAudio o

40、utputPNHR2 A-13E-1AMAudio mute input - A-14E-2MMMIC mute input- A-15E-3TXSSignal indicating whether the transceiver is transmitting or not.- . Refer to Terminal functiononpage 49, if need descriptionindetail. . Connect CN5 of the radio to connector C of theKCT-19instead of to the internal speaker co

41、nnector, if use external speaker. 8 TK-760/762 INSTALLATION 2.IgnitionSense Cable (KCT-18 : Option) TheKCT-18isanoptional cable for enabling the igni- tion function. The ignition function lets you turn the powerto the transceiver onandoffwiththe car ignition key. If you use the Horn Alert function,

42、youcanturn the function off while driving with the ignition key. 2-1. ConnectingtheKCT-18tothetransceiver 1.Install theKCT-19inthe transceiver.(SeetheKCT- 19 section.) 2.Insert the KCT-18 lead terminal(f)into pin 3 of the square plug (0)suppliedwiththeKCT-19,then in- sertthesquare plug intotheKCT-19

43、connector (0) 2-2. Modifyingthetransceiver Modifythe transceiverasfollows to turn the power or the Horn Alert functiononandoffwith the ignition key. 1.Remove the lower halfofthe transceiver case. 2.Set jumper resistors(On)R5andR6of theTX-RX unit(A/2)asshowninTable1. Fig. 3 b KCT-18 ANT ) i;= Db 7 .

44、U00U t TX-RXUNIT A/2 - R5 0 0 E; tMFu B R6 KCT-19 t1(01110 j Fig.4 OperationwhenKCT-18isconnectedR5R6 EnableEnable Power on/off and Horn Alert on/offDisableEnable Horn Alert on/offEnableDisable DisableDisable KCT-18 cannot be connected Power cannotbeturnedon Table 1R5andR6setup chart The Horn Alert

45、functioncanbe turnedonandoffonly if the functionhasbeen assigned to the AUX key. 9 TK-760/762 INSTALLATION 3.PA/HAUnit(KAP-1: Option) 3-1. InstallingtheKAP-1inthetransceiver The Horn Alert (max. 2A drive) and Public Address functions are enabled by inserting the KAP-lWl(3P; white/black/red) into CN4

46、onthe TX/RX unit, inserting W2(3P:green) intoCN201ontheTX-RXunit, and con- necting the KCT-19 (option) to CN2 and CN3ofthe KAP-l. Installation procedure 1.Open the upper caseofthe transceiver. 2.Insert thetwocables(0)withconnectors from the KAP-l switch unit into the connectorsonthe trans- ceiver. 3

47、.Secure the switch unit boardonthe chassiswith twoscrews(0)withthe notch(f)inthe board placed at the front left side. 3-2. Modifyingthetransceiver Horn Alert The signal from pin62ofIC409(CPU)on theTX-RX unit turns013and014on andoffand drives KAP-l HA relayK2to drive the hornwitha maximum of 2A. The

48、default outputisHR1.The relay openoutput can be obtained betweenHRland HR2 by removing Rlinthe KAP-l. RlOutput form HRl(Default)Enable r HR1 HR2Disable r HR1 HR2 Fig. 5 D 0 D D Q IZJ D D DIZJD 0 Fig.6KAP-1 foil sideview Public Address The signal from pin 14 of IC10ofthe TX-RX unit drivesPArelay Klin

49、the KAP-l and switches the audio poweramplifier output between the externalPAsys- tem(throughKCT-19)and internal and external speak- ers. Touse thePAfunction,RSOontheTX-RXunitmust be removed. (SeeFig.7.) RSO Use thePAfunctionDisable Do not use thePAfunctionEnable 10 TX-RXUNIT(A/2) Foil sideview Fig. 7 Rso!ID TK-760/762 INSTALLATION 3-3.Others IfthePAand HR2 arenotnecessaryandthe speaker outputisoutput toanexternal unit through the KCT-19,connect theKCT-19C connector to CN5on theTX-RXunit. GRN c B KCT-19Terminal 13101 0.000 00000 o 00 151263 6:E